'Twas the ˌNight Before ˈChristmas BrE AmE
an old Christmas poem by Clement Moore which is especially popular in the US. It describes ↑ Santa Claus and his visit to a family's house on Christmas Eve. The poem is often printed in newspapers and magazines at Christmas, and there are many parodies (↑ parody ) of it. It begins with the words: 'Twas the night before Christmas/And all through the house/ Not a creature was stirring,/Not even a mouse.